Biophysical characterisation of GlycoPEGylated recombinant human factor VIIa

Bitten Plesner, Peter Westh, Anders D. Nielsen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The effects of GlycoPEGylation on the structural, kinetic and thermal stability of recombinant human FVIIa were investigated using rFVIIa and linear 10 kDa and branched 40 kDa GlycoPEGylated® recombinant human FVIIa derivatives. The secondary and tertiary structure of rFVIIa measured by circular dichroism (CD) was maintained upon PEGylation. In contrast, the thermal and kinetic stability of rFVIIa was affected by GlycoPEGylation, as the apparent unfolding temperature Tm measured by differential scanning calorimetry (DSC) and the temperature of aggregation, Tagg, measured by light scattering (LS) both increased with GlycoPEGylation. Both Tm and Tagg were independent of the molecular weight and the shape of the PEG chain. From the present biophysical characterisation it is concluded that after GlycoPEGylation, rFVIIa appears to be unaffected structurally (secondary and tertiary structure), slightly stabilised thermally (unfolding temperature) and stabilised kinetically (temperature of aggregation).
Original languageEnglish
JournalInternational Journal of Pharmaceutics
Volume406
Issue number1-2
Pages (from-to)62-68
ISSN0378-5173
DOIs
Publication statusPublished - 2011

Cite this

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title = "Biophysical characterisation of GlycoPEGylated recombinant human factor VIIa",
abstract = "The effects of GlycoPEGylation on the structural, kinetic and thermal stability of recombinant human FVIIa were investigated using rFVIIa and linear 10 kDa and branched 40 kDa GlycoPEGylated{\circledR} recombinant human FVIIa derivatives. The secondary and tertiary structure of rFVIIa measured by circular dichroism (CD) was maintained upon PEGylation. In contrast, the thermal and kinetic stability of rFVIIa was affected by GlycoPEGylation, as the apparent unfolding temperature Tm measured by differential scanning calorimetry (DSC) and the temperature of aggregation, Tagg, measured by light scattering (LS) both increased with GlycoPEGylation. Both Tm and Tagg were independent of the molecular weight and the shape of the PEG chain. From the present biophysical characterisation it is concluded that after GlycoPEGylation, rFVIIa appears to be unaffected structurally (secondary and tertiary structure), slightly stabilised thermally (unfolding temperature) and stabilised kinetically (temperature of aggregation).",
author = "Bitten Plesner and Peter Westh and Nielsen, {Anders D.}",
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Biophysical characterisation of GlycoPEGylated recombinant human factor VIIa. / Plesner, Bitten; Westh, Peter; Nielsen, Anders D.

In: International Journal of Pharmaceutics, Vol. 406, No. 1-2, 2011, p. 62-68.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Biophysical characterisation of GlycoPEGylated recombinant human factor VIIa

AU - Plesner, Bitten

AU - Westh, Peter

AU - Nielsen, Anders D.

PY - 2011

Y1 - 2011

N2 - The effects of GlycoPEGylation on the structural, kinetic and thermal stability of recombinant human FVIIa were investigated using rFVIIa and linear 10 kDa and branched 40 kDa GlycoPEGylated® recombinant human FVIIa derivatives. The secondary and tertiary structure of rFVIIa measured by circular dichroism (CD) was maintained upon PEGylation. In contrast, the thermal and kinetic stability of rFVIIa was affected by GlycoPEGylation, as the apparent unfolding temperature Tm measured by differential scanning calorimetry (DSC) and the temperature of aggregation, Tagg, measured by light scattering (LS) both increased with GlycoPEGylation. Both Tm and Tagg were independent of the molecular weight and the shape of the PEG chain. From the present biophysical characterisation it is concluded that after GlycoPEGylation, rFVIIa appears to be unaffected structurally (secondary and tertiary structure), slightly stabilised thermally (unfolding temperature) and stabilised kinetically (temperature of aggregation).

AB - The effects of GlycoPEGylation on the structural, kinetic and thermal stability of recombinant human FVIIa were investigated using rFVIIa and linear 10 kDa and branched 40 kDa GlycoPEGylated® recombinant human FVIIa derivatives. The secondary and tertiary structure of rFVIIa measured by circular dichroism (CD) was maintained upon PEGylation. In contrast, the thermal and kinetic stability of rFVIIa was affected by GlycoPEGylation, as the apparent unfolding temperature Tm measured by differential scanning calorimetry (DSC) and the temperature of aggregation, Tagg, measured by light scattering (LS) both increased with GlycoPEGylation. Both Tm and Tagg were independent of the molecular weight and the shape of the PEG chain. From the present biophysical characterisation it is concluded that after GlycoPEGylation, rFVIIa appears to be unaffected structurally (secondary and tertiary structure), slightly stabilised thermally (unfolding temperature) and stabilised kinetically (temperature of aggregation).

U2 - 10.1016/j.ijpharm.2010.12.034

DO - 10.1016/j.ijpharm.2010.12.034

M3 - Journal article

VL - 406

SP - 62

EP - 68

JO - International Journal of Pharmaceutics

JF - International Journal of Pharmaceutics

SN - 0378-5173

IS - 1-2

ER -